jQuery+ajax实现修改密码验证功能实例详解

<script type="text/JavaScript">
  //获取url中的参数
  $(function(){
    var userName = window.location.href;
    var aa = userName.indexOf("=");
      console.log(userName);
    if (aa == -1)
      return "";
    userName=userName.substring(aa+1);
    //给hidden赋值并显示
    $("#userName").val(userName).attr("type","text");
    //ajax请求修改密码
    var rePassword = $("#repeatPassword").val();
    //6到15位字母或数字
    var reg=/^[0-9a-zA-Z]{6,15}$/;
    //新密码校验
    $("#newPassword").blur(function(){
      $("#msg").css("display","none");
      var newPassword = $("#newPassword").val();
      if(newPassword==""||newPassword==null){
       $("#msg").html("请输入新密码！").css("display","block");
      }elseif(!reg.test(newPassword)){
       $("#msg").html("密码格式不正确,请重新输入！").css("display","block");
      }
    });
    //重复密码校验
    $("#repeatPassword").blur(function(){
      var newPass = $("#newPassword").val();
      var repPass = $("#repeatPassword").val();
      if(newPass != repPass){
       $("#msg").html("两次输入密码不一致,请重输！").css("display","block");
      }
    });
    //表单提交前校验
    $("#updateBtn").click(function(){
      var flag = true;
      var newPass = $("#newPassword").val();
      var repPass = $("#repeatPassword").val();
      var reg1=/^[0-9a-zA-Z]{6,15}$/;
      if(!reg1.test(newPass)||newPass!=repPass||newPass ==""||newPass==null){
       flag = false;
      }
      if(flag){
       $.ajax({
         url:"/HuaMuWebsite/userManage/editPassword?userName="+userName,
         type:"POST",
         async:false,
         data:$("#fm").serialize(), //表单数据序列化, 可以对form表单进行序列化，从而将form表单中的所有参数传递到服务端。
         success:function(data){
         //json字符串转为json对象
         var jsonObj=eval("("+data+")");
         if(jsonObj.success != null){
           alert(jsonObj.success);
           window.location.href="/HuaMuWebsite/admin/login.html" rel="external nofollow" ;
         }else{
           alert(jsonObj.failure);
         }
       },
       error:function(e){
         alert("请求出错！");
       }
       });
      }   
});
  });
</script>